Proceedings of the Korean Institute of Navigation and Port Research Conference (한국항해항만학회:학술대회논문집)
- Volume 1
- /
- Pages.297-300
- /
- 2006
Development of Broad-Band Electromagnetic Wave Absorber for X-band Sensors in Double-layered Type Using Carbon
- Choi, Chang-Mook (Radio Sciences & Engineering, Korea Maritime Univ.) ;
- Kim, Dong-Il (Radio Sciences & Engineering, Korea Maritime Univ.) ;
- Choi, Dong-Han (Research Institute of Industrial Technology, Korea Maritime Univ.) ;
- Li, Rui (Radio Sciences & Engineering, Korea Maritime Univ.)
- Published : 2006.10.18
Abstract
In this paper, the EM wave absorbers were designed and fabricated for X-band sensors using Carbon of dielectric material with CPE. The complex relative permittivity of samples is calculated by the measured S-parameter data. We simulated the double-layered type EM wave absorber with broad bandwidth using the measured complex relative permittivity by changing the thickness and layer, which was fabricated based on the simulated design. The fabricated EM wave absorber consist of 1mm first layer sheet facing metal with Carbon composition ratio 70 vol% and 1.5 mm second layer sheet with Carbon composition ratio 60 vol%. The comparisons of simulated and measured results are good agreement. As a result, the optimized absorption ability of double-layered type EM wave absorber with thickness of 2.5 mm is higher than 10 dB from 7.8 GHz to 13.3 GHz.